One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6,10,9)(7,12,8,11)(13,14,19,23)(15,24,22,18)(16,25,27,28)(17,21,26,20)(5,7,10,8)(6,11,9,12)(13,15,18,14,19,22,24,23)(16,21,26,28,27,20,17,25)(1,2,3,4)(5,8,10,7)(6,11,9,12)(13,16,19,27)(14,20,23,21)(15,25,22,28)(17,24,26,18)(5,9,10,6)(7,12,8,11)(13,17,18,16,19,26,24,27)(14,21,22,28,23,20,15,25)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.